Double-edged knife blade



FIG. 1 is a side elevational view of a double-edged knife blade showingmy new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side elevational view of the side of the knife blade that isopposite to the side shown in FIG. 1;

FIG. 4 is a bottom view thereof;

FIG. 5 is an end view looking from the left end of the drawing; and,

FIG. 6 is an end view looking from the right end of the drawing.

The broken lines shown in FIGS. 1-6 are for illustrative purposes onlyand form no part of the claimed design.

The ornamental design for a double-edged knife blade, as shown.